To what decimal place should each answer be rounded? How many significant figures does the rounded answer have? A. 9 cm+2.8 cm=11.8 cm(unrounded)

After rounding, the number should be reported to the

ones place.

tenths place.

hundredths place.
Thus, the number has

3 significant figures.

2 significant figures.

1 significant figure.

c is the answer because when something is left after something evaporates that shows the chemical change.

you gotta add the following molecules so we can give u an answer

explanation:

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.